The document discusses the impact and influence of the Korean wave on teenagers. It describes how Korean music, television, and culture first became popular in Asia in the 1990s and have since spread globally. The document argues that while the Korean wave provides teenagers with opportunities to learn about a new culture and increase their knowledge and creativity, it can also cause them to waste money and forget about their own country's culture. In the end, the author recommends that the Korean wave can be a positive influence as long as teenagers remain proud of their own cultural heritage.